Journal of Satellite, Information and Communications (한국위성정보통신학회논문지)

Korea Society of Satellite Technology (한국위성정보통신학회)
권호 표지

Hybrid Communication System for Real-time Video Transmission of Multicopter

멀티콥터의 실시간 영상 전송을 위한 하이브리드 통신 방식

  • 이선의 (광운대학교 전파공학과 소속 유비쿼터스 통신 연구실) ;
  • 박지호 (광운대학교 전파공학과 소속 유비쿼터스 통신 연구실) ;
  • 김진영 (광운대학교 전파공학과 소속 유비쿼터스 통신 연구실)
  • Received : 2014.10.27
  • Accepted : 2014.11.28
  • Published : 2014.12.31
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Abstract

In this paper, we propose a novel modulation scheme specialized in real time broadcast system using a multicopter. Since multicopters have many advantages in aerial photography, they have been widely used in broadcasting technologies. However, because of restrictions on flight time, it is difficult to utilize multicopters in real time broadcasting systems. Therefore, video transmission using multicopter is necessary for low power communication techniques in air channel environment. Performance results of the hybrid modulation in this paper are compared to that of conventional modulations with Bit Error Rate (BER) and Signal to Noise Ratio (SNR) simulations. The results also showed that proposed system is suitable for aerial photography. Experiments demonstrated the superiority of the proposed modulation scheme by showing received symbols through an USRP equipment.

본 논문에서는 멀티콥터를 이용한 실시간 방송 시스템 구현을 위한 새로운 전송 기법을 제시한다. 멀티콥터는 항공 촬영에 많은 장점이 있기 때문에 방송 기술에 많이 쓰이고 있다. 하지만 운용 시간에 많은 제약이 따르기 때문에 실시간 중계에 어려움이 있다. 따라서 전력 소모가 적고 항공 채널환경에 적합한 통신 기법이 필요하다. 본 논문에서 제시한 융합된 모듈레이션 기법을 기존의 통신 방식과 성능을 비교하고 항공촬영에 적합함을 설명한다. 실제 모듈레이션 심벌을 USRP 장비를 통해 전송하여 제시된 모듈레이션의 성능을 증명한다.

Keywords

References

  1. A.El-Hoiydi and J.-D. Decotignie "WiseMAC: An Ultra Low Power MAC Protocol for the Downlink of Infrastructure Wireless Sensor Networks," in Proceedings of the 9th International Symposium on Computers and Communications, Alexandria, Egypt, pp. 244-251, 2004.
  2. W. Ye, J. Heidemann J, "SCP-MAC: reaching ultra-low duty cycles(poster)," in Proc. IEEE SECON. 5, pp.1-2, Sept. 2005.
  3. Jeong-Yeob Oak, Saewoong Bahk, "Early Preamble MAC to reduce delay and energy consumption in duty cycle based asynchronous wireless sensor networks," The 2008 Fall conference of IEIE, 2008.
  4. Tijs van Dam and Koen Langendoen, "An Adaptive Energy-Efficient MAC Protocol for Wireless Sensor Networks," in Proc. SenSys. 2003, pp. 171-180, Nov. 2003.
  5. Ho-chul Lee, Jeong-hwan Hwang, and Hyun Yoe, "Energy Efficient MAC Protocol for Ubiquitous Agriculture," International Journal of Smart Home, Vol.4, No.3, July, 2010.
  6. P. Kolios, V. Friderikos and K. Papadaki, "Mechanical Relaying in Cellular Networks with Soft-QoS Guarantees", IEEE Globecom 2011 proceeding, pp.1-6, 2011.
  7. P. Kolios, V. Friderikos, and K. Papadaki, "Energy Consumption and Resource Utilization in Mechanical Relaying," IEEE Vehicular Technology Magazine, vol. 6, no. 1, pp. 24-30, 2011.
  8. M. Hasna and M.-S. Alouini, "End-to-end performance of transmission systems with relays over Rayleigh-fading channels," IEEE Transactions on Wireless Communications, vol. 2, no. 6, pp. 1126-1131, 2003. https://doi.org/10.1109/TWC.2003.819030
  9. National Instruments. http://www.ni.com